<template>
  <view v-if="goods_info.goods_name">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
          <image :src="item.pics_big" @click="priview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">¥ {{goods_info.goods_price}}</view>
      <!-- 商品主体信息区域 -->
      <view class="goods-info-body">
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="yf">快递：免运费--{{total}}</view>
    </view>
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航 -->
    <view class="nav-bu">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {mapState,mapMutations,mapGetters} from 'vuex'
  export default {
    watch:{
      total:{
        handler(newVal){
          // 2. 通过数组的 find() 方法，找到购物车按钮的配置对象
          const findResult = this.options.find((x) => x.text === '购物车')
          if(findResult){
             findResult.info = newVal
          }
        },
        immediate: true
      }
    },
    computed:{
      ...mapState('my_cart',['cart']),
      ...mapGetters('my_cart', ['total']),
    },
    data() {
      return {
        // 获取商品对象
        goods_info:{},
        goods_id :'',
        options: [{
                    icon: 'headphones',
                    text: '客服'
                }, {
                    icon: 'shop',
                    text: '店铺',
                    info: 2,
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options){
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
       ...mapMutations('my_cart', ['addToCart']),
          // 定义请求商品详情数据的方法
        async getGoodsDetail(goods_id) {
          const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id })
          if (res.meta.status !== 200) return uni.$showMsg()
          // 使用字符串的 replace() 方法，为 img 标签添加行内的 style 样式，从而解决图片底部空白间隙的问题
          res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
          // 为data中的数据赋值
          this.goods_info = res.message
        },
        priview(i){
          uni.previewImage({
            count:i,
            urls:this.goods_info.pics.map(x=>x.pics_big)
          })
        },
        onClick(e){
          if (e.content.text === '购物车'){
            console.log(e.content.text)
            uni.switchTab({
              url:'/pages/cart/cart'
            })
          }
        },
        buttonClick(e){
          if (e.content.text === '加入购物车'){
            const goods = { 
              goods_id:this.goods_info.goods_id,
              goods_name:this.goods_info.goods_name, 
              goods_price:this.goods_info.goods_price, 
              goods_count:1,
              goods_small_logo:this.goods_info.goods_small_logo, 
              goods_state:true 
              }
              this.addToCart(goods)
          }
        }
    }
  }
</script>

<style lang="scss">
swiper{
  height: 750rpx;
    image {
      width: 100%;
      height: 100%;
    }
}

.goods-info-box{
  padding: 10px;
  padding-right: 0px;
  .price{
    color: #c00000;
    font-size: 18px;
    margin: 10px 0px;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      padding-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #A5A4A4;
      color: gray;
    }
  }
  .yf{
  margin: 10px 0px;
  font-size: 12px;
  color: gray;
  }
}
.nav-bu{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
</style>
